Sign-consistency and solvability of constrained linear systems.

Lee, Gwang-Yeon; Shader, Bryan L.

Displaying similar documents to “Sign-consistency and solvability of constrained linear systems.”

The weak Hawkins-Simon condition.

Bidard, Christian (2007)

ELA. The Electronic Journal of Linear Algebra [electronic only]

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The general totally positive matrix completion problem with few unspecified entries.

Fallat, Shaun M., Johnson, Charles R., Smith, Ronald L. (2000)

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The combinatorially symmetric $P$ -matrix completion problem.

Johnson, Charles R., Kroschel, Brenda K. (1996)

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On a nonnegative irreducible matrix that is similar to a positive matrix

Raphael Loewy (2012)

Open Mathematics

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Let A be an n×n irreducible nonnegative (elementwise) matrix. Borobia and Moro raised the following question: Suppose that every diagonal of A contains a positive entry. Is A similar to a positive matrix? We give an affirmative answer in the case n = 4.